Tubular joint for heating systems.



APPLICATION HLED NOV.10|l9l7.

Patnted Sept. 24,191&

2 SHEETS-SHEET l.

0,. WASHING")!!! II. C.

H. M. SHEER.

TUBULAR JOINT FOR HEATING SYSTEMS.

APPLICATION HLED NOV. 10. 19! 7- Patented Sept. 24, 1918.

n'nfin'r m. shame, or corner, ILLINors.

TUBULAR JOINT FOR nna'rrne srs'rnms.

Specification of Letters I atent.

Application filed November 10, 1917. Serial No. 201,302.

To all whom it may concern: Be it known that I, HENRY M. Sauna, a citizen of the United States, reslding at Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in Tubular Joints for Heating Systems, of which the following is a specification.

My invention relates to an improvement in tubular joints for heating systems, and more particularly as applied to brooders and incubators.

One of the primary objects is to do away with the use of solder, thus preventing 1njury from overheating, while at the same time making the joint practically air-tight or sufficiently air-tight at least for the purposes intended.

In the accompanying drawings Figure 1 is a view in perspective;

Fig. 2 is a horizontal sectional view;

Fig. 3 is a vertical section; and

Fig. 4 is a section through one of the tubes.

Fig. 5 is a fragmentary view showing the members of the band partly assembled and one of the tubes broken off but partly extended through one of the band orifices; Fig. 6 is a view of the lower end of the center flue.

A, represents the center flue, it bein provided with a plurality of holes 1, 1, o suitable size.

A band 2 made as shown in Figs. 2 and 5 in two sections, detachably connected by joints 3 at their edges, has the same number of holes 4, 4, therein as in the flue, but of larger size.

The radiating tubes 5, 5, are made of sheetmetal and rolled up to a size to be inserted through, and fit snugly in the holes 4, 4, of the band, the inner end of these tubes being curved to the proper form and bent outwardly in the form of a flange 6 whereby to fit and rest against the inner surface of the band adjacent to the holes 4, 4.

These tubes 5 are inserted through the holes 4, and then the band is fitted over the lower end of the flue with the holes 4, 4, and the holes 1, 1, in re 'stry, and, after the parts are thus assem led, the edges of the holes 1, 1, are bent or swaged outwardly as shown in Figs. 2 and 3 into the inner ends of the tubes 5, 5, by means of a special die and swage for the purpose.

This forms a perfect gas-tight joint by forcing the tubes 5 out to the full size of the "Hole 4 in the band, overlapping and breaking the joint between the tubes and the inside flue. The entire structure is firmly locked together, after the various operations above mentioned are completed. To give additional strength, the band could be spot-welded to the inside flue at points between the tubes. These tubes can be made, of course, with lock-seam, when desired, as well as with the plain lap-seam, as shown.

The tubes are preferably so formed that the inner edge of the sheet-metal is bent inwardly to form a strengthening flange 7, as shown in Fig. 4.

By the use of this form of joint, I am enabled to do away with the use of solder; hence it cannot be injured by overheatin I also dispense with the use of a cast-ironieat distributer, the latter being heavy and expensive, and besides it is difiicult to secure anything like an air or gas-tight joint, not to speak of the weight of such a distributer Patented Se t-2'4, 191's.v

making it necessary to have it supported or attached in some manner to the incubator top.

By my present form of joint, I have a light, simple air and gas-tight joint, easily and cheaply constructed, and at the same time efiectual in its work.

I claim:

1. A joint for heating systems comprising concentric tubular members having registering holes, and tubes inserted throu h the holes of the outer member and having anged inner ends adapted to be held between the tubular members, the edges of the holes of the inner tubular member bent outwardly into the inner ends of the tubes, whereby to form an air and gas-tight joint.

2. The combination with a band havin holes therein, and tubes inserted through said holes and having flanged inner ends, and a central flue of less diameter than the band having holes of smaller size than the holes in the band, and brought into registry therewith and their edges bent outwardly into the inner ends of the tubes.

3. The combination with a band made in sections and having holes therein, and tubes inserted through said holes, and having flanged inner ends, of an inner central flue having holes of smaller size adapted to register with the holes of the band, and to receive the flanges on the inner ends of the tubes between the band and the central flue, the edges of theholes of the fine bent outwardly-rate thehenci, and a central flue-inseutegL in the the flanged inner ends of the tubes. band, with its holes in registry With those w 4. The combination with a, band haying f th ebend theedgesqfitheholes in the flue holes therein, and tubes formed of a T011 of bent outwardly 'intd the inner flanged ends 5 sheetmeta1, the inner edgethereof terminntd the -tubes.

ing in an inwurclly-extenc'l'ing flange, and the In testimony whereof I a'ifix my signature.

inner end f the tube fienged,,,thes e tubes being inserted outwardly through the 'hdles in HENRY M. SHEER.

00,1 of thin patent may be obtained (or nve cents each, by addressing the Commissioner of Patcnn.

wlglyngton, D. 0." 

